Skip to content
F03.90 · Billable

2026 ICD-10-CM Diagnosis Code F03.90

Unspecified dementia, unspecified severity, without behavioral disturbance

About F03.90

Code

F03.90

Description

Unspecified dementia, unspecified severity, without behavioral disturbance

Billable

Yes — billable on its own

Parent code

F03 (Unspecified dementia)

Category

F01-F09 — Mental disorders due to known physiological conditions

Set

ICD-10-CM 2026

Clinical context

Inherited from F03 (Unspecified dementia)

ICD-10-CM code F03 covers unspecified dementia within the F01-F09 range (mental disorders due to known physiological conditions). Use the most specific leaf code that matches the documented clinical presentation — the parent code is a navigational header, not a billable code on its own. Documentation should capture symptom onset, course, severity, and functional impact. Where applicable, attach a validated screening instrument score (PHQ-9, GAD-7, PCL-5, or equivalent) and note any comorbid conditions in the same encounter.

Code details

Code attributes

  • Non-billable/Non-specific code

Coding rules

  • Specify the leaf code — the parent code (e.g. F32) is a navigational header; billing requires a leaf code (F32.0, F32.1, etc.) that matches the documented presentation.
  • Document onset, course, and severity (mild / moderate / severe) plus functional impact. Payers use this combination when adjudicating medical necessity.
  • Attach a validated instrument score (PHQ-9, GAD-7, PCL-5, or equivalent) at intake and at follow-up where applicable. Objective measures support code selection and continued authorization.
  • Review at every visit and update if presentation changes — including remission and partial remission states.

Sources

  • Centers for Medicare & Medicaid Services — 2026 ICD-10-CM
  • AAPC — ICD-10-CM Code Lookup
  • CDC — ICD-10-CM Official Guidelines for Coding and Reporting

This reference is provided for billing and documentation guidance only. It is not medical advice. For clinical decision-making, consult the current CMS ICD-10-CM Official Guidelines for Coding and Reporting, and verify code applicability against the patient's documented clinical findings.

Your evenings belong to you. Not your notes.

Join the therapists who stopped staying late for documentation and started focusing on what matters — their patients.

Start Free TrialBook a Demo

7-day free trial · Cancel anytime · 30-day money-back guarantee